body {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
}
.nav{ width:100%; height:0.8rem; position: fixed; bottom:0; left:0; background:#fff; border-top:1px solid #ddd; z-index:1000000;}
.nav li{ width:auto; height:0.4rem; float:left; font-size:0.24rem; margin:0 0.1rem 0 0; }
.nav li a{ color:#333; }

